CVE-2026-53157: net: phonet: free phonet_device after RCU grace period
Published Jun 25, 2026
·Updated
In the Linux kernel, the following vulnerability has been resolved:
net: phonet: free phonetdevice after RCU grace period
phonetdevicedestroy() removes a phonetdevice from the per-net device list with listdelrcu(), but frees it immediately. RCU readers walking the same list can still hold a pointer to the object after it has been removed, leading to a slab-use-after-free.
Use kfreercu(), matching the lifetime rule already used by phonetaddressdel() for the same object type.
Affected Software
280 affected componentsFixes available
Linux Linux kernel
Linux Linux kernel>=2.6.33<5.10.260
Linux Linux kernel>=5.11<5.15.211
Linux Linux kernel>=5.16<6.1.177
Linux Linux kernel>=6.2<6.6.144
Linux Linux kernel>=6.7<6.12.95
Linux Linux kernel>=6.13<6.18.36
Linux Linux kernel>=6.19<7.0.13
Linux Linux kernel=7.1-rc1
Linux Linux kernel=7.1-rc2
Linux Linux kernel=7.1-rc3
Linux Linux kernel=7.1-rc4
Linux Linux kernel=7.1-rc5
Linux Linux kernel=7.1-rc6
Linux Linux kernel=7.1-rc7
Microsoft azl3 kernel 6.6.143.1-1<6.6.144.1-1
6.6.144.1-1
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-azure*
ubuntu/linux-lts-xenial*
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-aws-hwe*
ubuntu/linux-azure*
ubuntu/linux-gcp*
ubuntu/linux-hwe*
ubuntu/linux-hwe-edge*
ubuntu/linux-kvm*
ubuntu/linux-oracle*
ubuntu/linux-fips*
ubuntu/linux-fips*
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-aws-5.0*
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ubuntu/linux-azure-4.15*
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ubuntu/linux-oem*
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ubuntu/linux-gke*
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ubuntu/linux-intel-iotg-5.15<5.15.0-1112.118~20.04.1
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ubuntu/linux-iot*
ubuntu/linux-kvm*
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-195.205~20.04.1
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ubuntu/linux-nvidia-tegra-5.15*
ubuntu/linux-oem-5.10*
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ubuntu/linux-oracle*
ubuntu/linux-oracle-5.11*
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ubuntu/linux-oracle-5.8*
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ubuntu/linux-xilinx-zynqmp*
ubuntu/linux-aws-fips*
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ubuntu/linux-gcp<5.15.0-1118.128
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ubuntu/linux-gke<5.15.0-1113.119
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ubuntu/linux-gkeop<5.15.0-1100.108
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ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
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ubuntu/linux-ibm<5.15.0-1111.115
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ubuntu/linux-ibm-6.8*
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ubuntu/linux-kvm<5.15.0-1109.114
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ubuntu/linux-oem-6.5*
ubuntu/linux-oracle<5.15.0-1114.120
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ubuntu/linux-oracle-6.5*
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ubuntu/linux-raspi*
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.19*
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ubuntu/linux-starfive-5.19*
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ubuntu/linux-xilinx-zynqmp<5.15.0-1080.84
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debian/linux<=6.1.176-1
6.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.144.1-1
Event History
Jun 25, 2026
CVE Published
via MITRE·08:38 AM
Data Sourced
via MITRE·08:38 AM
Description
Data Sourced
via OSV·09:16 AM
DescriptionSeverityAffected Software
Data Sourced
via NVD·09:16 AM
RemedyDescriptionSeverityWeaknessAffected Software
Jun 27, 2026
Data Sourced
via Microsoft·08:17 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-53157?
The severity of CVE-2026-53157 is assessed at a risk level of 43.
2
How do I fix CVE-2026-53157?
To fix CVE-2026-53157, update to the latest version of the Linux kernel where the vulnerability has been resolved.
3
What is the impact of CVE-2026-53157?
CVE-2026-53157 could potentially lead to use-after-free vulnerabilities which may allow arbitrary code execution.
4
What version of Linux is affected by CVE-2026-53157?
CVE-2026-53157 affects the Linux kernel prior to the patch being applied.
5
Who is affected by CVE-2026-53157?
Users and systems running vulnerable versions of the Linux kernel are at risk from CVE-2026-53157.